Apparatus for dispensing aerated liquids.



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EN. 736,006. l

UNITED 'STATES atented August 11, 190B.

PATENT OFFICE..

JOHN JAMES MCLAUGHLIN, OF TORONTO, CANADA.

APPARATUS FOR DISPENSING AERATED LIQUIDS.v

SPECIFICATION forming part of Letters Patent No. I236,000, dated August 11, 1903.

ippuanon ined February 20.1902. seria No. 94,946. (No man.)

To a/ZZ whom it may concern.:

Be it known that I, JOHN J AMES MCLAUGH- LIN, of the city ofToronto, in the county of York, Province of Ontario, Canada, have invented certain new and useful Improvements in Apparatus for Dispensing Aerated Liquids, of which the following is a specification.

My invention relates to apparatus for dispensing aerated liquids in which the aerated liquid s drawn from the reservoir into aneintermediate vessel, from which the pressure is then relieved and the contents drawn off by gravity into a glass for consumption.

My object is to so construct the apparatus that the liquid is impeded as little as possible in its discharge, as any impediments or restrictions break up the liquid and cause the liberation of an undue amount of gas, which it is desirable to avoid.

I attain my object by setting the bulb forming the auxiliary reservoir above the valve in the connection between it and the main reservoir instead of below, so that the aerated liquid enters and leaves the bulb at the same end, avoiding the necessity of a valve-spindle running through the bulb, su oh as previously employed.

My invention further relates to the peculiar construction of the valve, necessitated by the new location of the auxiliary reservoir, substantially as hereinafter more speciiically described, and then denitely claimed.

Figure l is a sectional elevation of my improved apparatus with the valve in the discharging position. Fig. 2 is a diagrammatical view showing the valve-ports and their connections in the receiving position. Fig. Sisa similar view showing the valve-ports and their connections in the sniftf position. Fig. 4 is a sectional elevationof the valve in the receiving position, taken on the line x y in Fig. 2.

` In the drawings, like letters of reference indicate corresponding parts in the different figures.

In the drawings, A represents a soda-fountain arm adapted for connection to a counter. Through the arm runs the pipe B, communi eating with a reservoir. (Not shown.) This pipe is extended through the hrizontal arm C and communicates with the inlet-port D in the valve-seat E. In this valve-seat is formed the outlet-port F,communicating with the discharge-nozzle G.

H is a snift-port communicating by means of'a. passage-way a with the space insidethe fountain-arm surroundingthe pipe B. This space is closed at its lower end, but communicated by means of the discharge pipe or spout b with the drainage-basin I, provided with the drain-pipe c. In the valve-seatv is also formed the vent-port J, communicating withthe outer air behind the discharge-nozzle G, as shown. -K is the valve-disk, having the port L formed therein, communicatingwith the interior of the bulb or auxiliary reservoir M. This port is hereinafter referred to as the bulb-port. Through the valve-disk extends the vent-pipe N, opening at'the lower face of the valve-disk and extending up to a point near the upper end of the bulb. The valvedisk is held in contact with the valve-seat by means of a nut O, which is screwed upon the Wall d, surrounding the valve-seat. This nut has an annular flange e formed thereon, adapted to engage a shoulder on `the valvedisk. A soft washer f is preferablyV secured to the surface of the valve-seat and.. provided with openings corresponding with the various ports. To the valve-disk is secured a lever P, by means of which it may be operated. As shown in Fig. 2, a projection g is formed on the side of the valve-disk adapted to engage the stops h, formed by cuttingout'a -part of the wall d surrounding the valveseat. These stops serve to limit the motion of the lever-arm in either direction. I also prefer to screw on the wall d a lock-nut Q, which serves to hold the nut O as adjusted.

While the bulb M maybe made integral with the Valve-disk, yetI prefer to provide'it with a threaded neck R, which may be screwed into the upwardly-extending wall i, formed on the top of the valve-disk.

Having set out the construction of my invention, Iwill briefly describe its mode of operation. The normal position of the parts is with the bulb-port L registering with the outlet-port F and the vent-pipe N registering with the vent-port J. There is then free communication between the interior of the bulb and the discharge-nozzle and between the vent-pipe and the outer air. When it is deicc sired to draw a glass of soda, the lever P is thrown over to the left and the bulb-port L brought into communication with the inlet'- port D. The vent-pipe in this position is closed. The aerated liquid is forced into the bulb under pressure, compressing the air therein into the top. As soon as the bulb is filled to its limit the lever is turned back to bring the vent-pipe N in communication with the shift-port II. The excessive pressure upon the liquid is thus allowed to sniii' ofi to the drainage-pipe. Then returning the lever to its normal position the contents of the bulb will flow by gravity out of the bulb through the discharge-nozzle into the glass, retaining in solution a much larger quantity of gas than is possible with the ordinary apparatus. The air to supply the place ofthe escaping liquid passes up through the vent-port J and ventpipe N to the upper part of the bulb.

From the construction described it will be seen that in my apparatus the liquid enters and leaves the bulb or auxiliary reservoir at the same end, thus avoiding the use of aspindle extending through the bulb and carrying a valve at its lower end, which would produce disturbances in the liquid tending to break it up and permit of the escape of the gas held therein.

It is desirable in dispensing aerated liquids to have command of a small stream at considerable pressure for the purpose of stirring up the fiavoring-syrups used. I accomplish this by placing between the inlet-port and the vent-port a small needle-stream port IS, communicating by a by-passj with the outlet-port F. After the bulb has been filled by turning the lever a little farther the inlet-port and the port S may be brought into communication with one an other by means of the bulbport L (see Fig. 3) and a fine stream of liquid under reservoir-pressure discharged through the discharge-nozzle Gr. IVhen enough liquid has been discharged in this way, the lever can be brought back to sniff oit the excess pressure and the bulb full of liquid discharged, as already described.

In practice many variations can be made in the details of construction without departing from the spirit of my invention, which lies particularly in that arrangement of parts which permits me to iill and empty the bulb or auxiliary reservoir at the same end, thus avoiding the use of a special valve and spindle, as alreadydescribed. One detail is, however, of importance-that is, the means of holding together the valve disk and seat by means of the iianged nut engaging the valvedisk and screwed on the Wall surrounding the valve-seat and the lock-nut which clamps the aforesaid nut. The great pressure of gas in the liquid passing through the valve makes it hard to make a valve tight in the first place and makes easy readjustment a very important feature, and with the construction described the valve is easily kept tight.

That I claim as my invention is l.. In apparatus of' the class described, a

bulb; a vent-pipe extending up into the bulb from its lower end; and a valve-disk to the upperside oi' which the saidbulb is connected and which is provided with a port communicating with the vent-pipe, and a port communicating with the lower end of the bulb, in combination with a valve-seat provided with an inlet-port, an outlet-port, a vent-port, a needle-stream port between the inlet-port and vent-port, and a by-pass between the needlestream port and the outlet-port, the ports being so arranged that the bulb-port may be put in communication with the inlet-port, in communication with the inlet-port and needlestream port simultaneously, or the vent-pipe and bulb-port simultaneously in communication with the vent-port and the outlet respectively, substantially as described.

2. In apparatus of the class described, a bulb; a vent-pipe extending up into the bulb from its lower end; and a Valve-disk to the upper side of which the said bulb is connected and which is provided with a port communieating with the vent-pipe, and aport communicating with the lower end of the bulb, in combination with a valve-seat provided with an inlet-port, an outlet-port, a vent-port,a snift-port and a needle-stream port, the ports being so arranged that the bulb-port may be putin communication with the inlet-port, in

communication with the inlet-port and needlestream port simultaneously, the vent-pipe in communication with the snift-port, and then the vent-pipe and bulb-port simultaneously in communication with the vent-port and the outlet respectively, substantially as described.

In apparatus of the class described, the combination ci a main reservoir; a pipe communicating with the said reservoir, and having a flat valve-seat formed thereon at its upper side, and provided with an inlet-port communicating with the pipe, an outlet-port, a vent-port, and a snift-port; a wall formed around the said seat; a bulb, or auxiliary reservoir, provided with a shouldered neck having a valve-disk formed at its lower end with a suitable port formed therein; a ventpipe extending up within the bulb and opening through the lower face of the valve-disk; and a flanged part adapted to engage the neck of the bulb, or auxiliary reservoir, and adjustably secured to said wall, substantially as described.

Aiken, South Carolina, February l0, 1002.

' JOHN JAMES MCLAUGHLIN.

In presence of- DAVE H. WISE, G. W. IAos'rEn.

IIO 

